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JOSEPH R. PAYSON, OF CHICAGO, ILLINOIS.

Letters Patent No. 70,604, dated November 5, 1867.

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IMPROVED WINDOW-SASH SUPPORTER.

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TO ALL WI-IOM IT MAY CONCERN:

Be it known that I, JOSEPH R.'PAYSQN, of Chicago, in the county of Cook, and State of Illinois, have invented a new and improved Device for Supporting Window-Sashes; andI do hereby declare that the following ils-a full, clear, and exact description thereof, which will enable others skilled in the art to make and use .the same, reference being had to the accompanying drawings, forming part of this specification.

The nature of my invention consists in an automatic or self-acting friction wedge, placed either in the side of the window-frame or in the edge of the window-sash, and-constructed and arranged in such a manner that it will support the sash in any desired position, within the scope of its movement, by friction, and act more powerfully when the sash is stationary, or while it is being lowered, than when it is being raised,.but still admitting of the sash being either raised or lowered bythe pressure of the hand upon it alone, no other manipulation being requisite., The device is concealed from view,holds the sash square in the window-frame, and prevents it from rattling. In the accompanyingsheet of drawings- Figure 1 is a sectionalelevation of a window having myvinvention applied to it.

Figures 2, 3, and 4, detached views of the several parts which comprise the invention.

Similar letters of reference indicate corresponding parts.

A represents a fiat plate, made perfectly smooth at its face side, and of any suitable metal. The rear side is provided with a lateral projection, B, which extends'within a metallic box, C, and rests or bears upon an inclined surface, a, at the bottom of C. This box C is fitted within one side of the window-frame D, as shown clearly in'g. 1, and within' said box there is placed a spiral spring, E, the upper end of` which bears against the top C, and thc lower end upon the projection B of A, as shown clearly in iig. l. The projection Bis narrower than the 'plate A, and the former is bevelled at its outer end to correspond to the inclination of the surface a, at the bottom of box C. The projection B has free play within C, both vertically and horizontally, in order that the plate A may at all times be pressed, under the induence of the spring E, evenly against the edge ofthe sash F.

This invention is, ordinarily, best applied by letting the box Cinto the side of the wooden'frame between the beads, at the line of the meeting rail ofthe sash, with the plate A presented to the edge of the sash, as shown in fig. 1. If, however, 4the sash is too narrow for the frame, or .one sash be longer than the other, it would be better to insert the box C in the edge of the sash, in an inverted position to that shown in fig. 1, so that the inclined surface a will be at the topof the box C, and the plate A made to press against the side ofthe windowframe It will be seen from the above description that the plate A, with its projection B resting upon the inclined surface a, is by spring E forced downward and outward, with its dat smooth face or friction surface pressing firmly and steadily against the edge of the sash, thus supporting it securely wherever placed. V

Pressure of the'hand downward upon the sash, however, decreases the friction, forces the-projection B upward and backward on the inclined surface a, and causes the sash to descendi,`

An upward pressure of the hand upon the sash causes the projection B to recede, or move backward and upward on the inclined surface a still more readily, and permits the sash to be raised freely by relieving, in a great measure, the friction, which, however, returns in full force the instant the sash ceases to ascend, so that it is seized and sustained at the full point to which it has bcenraised, thus obviating the tendency toreact or 'sag which is so objectionable, especially in anupper sash. I

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- The friction-plate A with its projection B, in combination with the inclined surface a and the spring E, all` arranged as shown, or in an equivalent way, for the purpose specified.

The above specification of my invention signed by me this 20th day of July, 1867.

' AJOSEPH R. PAYSON.

Witnesses:

JOHN S. Brnnniv,v J. H. A. BoiiTnLs. 

